谢谢分享知识。难怪我那么喜欢青金石。知道青金石以前用来做过颜料，却不知道曾经那么宝贵。

来源: lilyofthevalley 于 2019-11-17 14:02:07 [旧帖] [给我悄悄话] 本文已被阅读：次

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